JP4623614B2 - Balance function training device - Google Patents

Description

[0001]
[Industrial application fields]
The present invention relates to a balance function evaluation training apparatus driven by a power unit.
[0002]
[Prior art]
As an equilibrium function training device, an autonomous training is provided that includes a power unit and causes the disc-like member on which the patient is placed to cause periodic or non-periodic unstable motion, and places the patient on the disc-like member to maintain balance. Apparatuses that perform the above are already known, and among them, there are JP-A-8-299496, JP-A-8-89597, and JP-A-9-149951 as apparatuses that cause a periodic rocking motion particularly related to the present invention.
[0003]
[Problems to be solved by the invention]
Japanese Patent Laid-Open No. Hei 8-299496 is provided with a rotating shaft that is upright at right angles to a base and is rotationally driven by a motor and has a rotating disk on the top. On the rotating disk, the footrest body is eccentric from the previous rotating shaft and is It is a device that is tilted at an angle and can be rotated freely. The footrest body makes a circular motion (precession rotation motion) with the upper surface tilted, so the patient on the footrest body should strive to not fall from there. It is said that the muscles of the legs and legs can be trained and the sense of balance can be cultivated.
[0004]
In JP-A-8-89597 and JP-A-9-149951, a rotating ring is installed flat on the upper surface of a hollow pedestal equipped with a motor via a rotating centering member comprising a circular rail and a grooved wheel or a flat ring and a plurality of trochanters. Further, a rocking plate is obliquely installed on the inclined upper surface of the rotating ring via a rotation centering member, the centers of the pedestal and the rocking plate are coupled by a universal joint, and the rotating ring is driven to rotate by an internal motor. Device. It is the same as the prior art 1 that it is a device for forcibly tilting a patient's ankle in many directions and forging the legs and hips.
[0005]
The intensity of the load on the patient is defined by the rotation period and the tilt angle of the rocking plate. Accordingly, the values of the rotation period and the tilt angle of the rocking plate should be set to optimum values according to the degree of injury or illness of the patient.
In the above three examples, the rotation cycle can be adjusted by changing the rotation speed of the motor. However, the tilt angle of the rocker is fixed for the device and can be changed only by replacing parts. Depending on the training situation, can not be quickly adjusted to the optimum value. This is the first problem.
[0006]
In addition, in all three cases, only physical training is given to the user and training is performed. As a result of the training, there is no means for specifically measuring and evaluating whether the patient was effective or not. . This is the second problem.
In addition, in the above three cases, the patient only spends time riding on the machine, so there is a third problem that the training becomes boring and it is difficult to continue training.
[0007]
[Means for Solving the Problems]
In order to solve these problems, in claim 1, the rotating table (1), the tilting table (2), the tilting body (3), the rocking plate (4), the radial load, the thrust load and the moment load can be supported simultaneously. The bearing (5), the universal joint (6), and the tilting angle adjusting mechanism (7), the tilting base (2) is fixed on the turntable (1), and the tilting body (3) is the tilting base (2). The tilting body main body and the tilting body head are pivotally coupled by a bearing (5) capable of supporting a radial load, a thrust load and a moment load at the same time. The center axis of the tilting body and the center of the head of the tilting body are coupled by a universal joint (6), and the center of the universal joint is made to coincide with the intersection of the pivoting axis and the tilting axis of the tilting body (3).
A link (71), a link (72) has a screw (73), fastened to the link (71) inclined Dodai (2), stopping the link (72) in the tilting body (3), screws (73 ) To provide a tilt angle adjustment mechanism (7) that can change and set the tilt angle of the tilt body (3) .
[0008]
Moreover, in Claim 2, the load measurement part ( 8) is attached to three places between the rocking | fluctuation board (4) and head part (34) of the equilibrium function training apparatus with a tilt angle adjustment function of Claim 1, The position of the center of gravity of the patient on the rocking board (4) was obtained from the signal of the load measuring unit ( 8) and displayed on the display screen to evaluate the center of gravity fluctuation.
[0009]
Further, in claim 3, a pattern diagram as an example for the center of gravity movement instruction is drawn on the display screen in claim 3 so that training for actively moving the center of gravity of the trainee can be performed. I made it.
[0010]
So far, this type of training has been “tasteless, easy to dry, not lasting” because of the repetition of simple movements for the patient. The present invention has been made with the intention of confirming the current state with the patient's own eyes and eagerly working on the indicated goals by displaying the state of the center of gravity of the patient during training from moment to moment. It is.
[0011]
[Action]
The turntable (1) includes a bottom plate (11), a pulley (13), a turntable (14), and a center fixed shaft (15). The center fixed shaft (15) is fixed to the bottom plate (11) , and the pulley (13) and the center fixed shaft (15) are rotatably coupled by a bearing (51).
The pulley (13) has a belt groove on the outer periphery and is employed when driving the belt. When the gear is driven, a cylindrical body with a predetermined tooth profile is formed on the outer periphery.
Tilting platform (2) is tilted Taimoto Edition (21) consists arm (22) for rotatably supporting the tilting member, which is fixedly mounted on a rotating platform. The tilting body (3) is supported by the arm (22) so as to be tiltable.
[0012]
The tilting body (3) includes a tilting body main body (31), a tilting shaft (33), a head portion (34), a shaft (35), and an upper board (36). The tilting body main body and the head portion are supported by a bearing (52). The shaft (35) is placed in accordance with the position of the pivot center of the bearing (52) so that the pivot shaft and the tilt axis (33) are orthogonal to each other.
The rocking disk (4) is a disk that rocks with a patient on it.
A sheet material such as a rubber plate with an uneven surface is attached to prevent slipping.
[0013]
The bearing (51) needs to be capable of applying a radial load, a thrust load, and a moment load. As the bearing used for this, two angular type bearings or a cross roller type bearing which can simultaneously apply three kinds of loads can be used.
Bearing (52) is different from the bearing (51), because of the constraint can not take the space, it is necessary performance which can a radial load and thrust load and moment load in one, cross roller type bearing or the like may be used.
Here the required performance of loading at three kinds of load same reason, considerably smaller in diameter of the bearing with respect to the swing plate diameter, so it is also possible that a load is applied on the outer side than the outer diameter of the bearing, 3 force This is because it is necessary to deal with this.
[0014]
The universal joint (6) couples the center shaft (12) of the turntable and the shaft (35) of the tilting head unit (34).
In the absence of this joint, the tilting head unit (34) turns (precession rotation) with the rotation of the turntable. However, if this joint is present, the tilting head unit (34) is prevented from turning. Will do the precession swinging motion.
If the center of the universal joint (6) does not coincide with the intersection of the pivot axis and the tilt axis of the tilt body (3), the tilt body head section does not move smoothly. Therefore, in order to avoid this problem, the intersection of the center of the universal joint (6) with the pivot axis of the tilting body (3) and the tilt axis is matched.
[0015]
The angle adjusting mechanism (7) includes links (71), (72), a screw (73), and a knob (75) for turning the screw. One end of a link (71) is attached to the tilting table (2) tilting Taimoto board of (21), one end of the link (72) is attached to the tilting body (31) of the tilting body (3). It is most efficient that the attachment position of the tilting body main body is an intersection of an axis perpendicular to the two axes of the pivoting axis and the tilting axis of the tilting body and the outer periphery of the tilting body main body (31).
The tilting body (3) is supported so as to be tiltable by the tilting shaft (32), and one end is supported from the tilting table by the link mechanism of the tilt angle adjusting mechanism (7). The tilt angle of the tilting body can be freely changed and set.
[0016]
The load measuring unit (8) is for measuring the fluctuation state of the center of gravity of the patient who is trained on the rocking board (4) over time. Therefore, any type of so-called load cell, which is a means for accurately measuring a member that deforms in response to a load and a displacement that accompanies the deformation, can be used.
Among them, a type in which a strain gauge is attached to a strain generating plate can be made thin, and is most suitable for the apparatus of the present invention in which the height is restricted.
[0017]
In the method using the bending rigidity of the load measuring member, the load measuring member (81) is approximately rectangular, and the minimum cross-sectional portion is formed by surrounding both sides of the substantially central portion. If this is done, the rigidity of the smallest cross section becomes the weakest and the largest distortion occurs. Therefore, it is convenient in measurement if a strain gauge (82) is attached to the front and back of the section.
In order to load the load on the load transmission shaft (85) and avoid moment load, a method of transmitting the load to the load measuring member (81) through the spherical bearing (83) is recommended.
The load is continuously measured electrically by a strain measuring device, and the data is sent to the computer calculation unit via the interface and obtained by calculation.
[0018]
From the measured three load points, the position of the center of gravity can be obtained as follows.
As shown in FIG. 2C, with the center of the upper board (36) as the origin, the straight line passing through the loading point of the first load measuring unit is the X axis, and the straight line passing through the origin and orthogonal thereto is the Y axis. . The distances from the origin to the loading points of the three load measuring units are equally R. In addition, the angle between the No. 2 and No. 3 loading points and the X axis is equally A (degrees). Assuming that the loads applied to the loading points 1, 2, and 3 are F1, F2, and F3 (kg), the formulas for calculating the center of gravity (Xg, Yg) are as shown in the following formulas (1, 2).
Xg = (F3-F2) * R * COS (A) / (F1 + F2 + F3)
(1)
Yg = {F1 * R − (F2 + F3) * R * SIN (A)} / (F1 + F2 + F3)
(2)
[0019]
Since this device is intended to be trained by an unintentional patient, it is better to be as low as possible in order to get on and off the device, and consideration should be given to making the overall height as low as possible.
It is desirable to provide an appropriate handrail so that the patient does not swing unexpectedly during the training.
[0020]
Operation and display are performed as follows.
(1) Precession oscillating cycle The precession oscillating cycle is set by setting the motor speed to a predetermined value.
(2) Precession swing angle The precession swing angle is set by turning the knob of the tilt angle adjustment mechanism (4)
This is done by setting the tilt angle.
(3) Temporal trajectory display of the center of gravity position of the patient during training Based on the measurement data of the load measuring unit, the center of gravity position of the patient is obtained every moment by calculation, and the result is displayed on the screen as a trajectory. For this purpose, electronic devices such as measurement signal processing modules and data processing computers are used.
[0021]
The center-of-gravity indication point in a no-load state before the patient gets on the apparatus is used as the origin, and the center-of-gravity permissible range to be targeted by the patient is drawn in a circle on the screen with this point as the center. The patient to be trained makes an effort so that the fluctuation of the center of gravity falls within this target circle. By doing so, the patient can accurately grasp his / her current situation and can increase his / her willingness to train to approach the goal of effort.
Also, based on the trajectory of the sway of the center of gravity for each training, the total evaluation is calculated as a numerical value. From the data of the locus of center of gravity fluctuation, the training result can be numerically evaluated using indices such as the maximum envelope circle of the peak, the area of the polygon formed by the peak, or the total length of the locus.
When recording the centroid swing trajectory swinging board (4) in the horizontal, the locus length of body sway, area, center position, sway tests such as Romberg rate is also possible.
[0022]
By doing this, it is possible to know the correlation between the number of trainings and the results of the training numerically and accurately, which is a good guideline for the trainer and the training for trainees. It is possible to accurately know whether or not there is an effect, and a significant effect can be expected in improving the motivation for rehabilitation.
[0023]
The training method and model pattern diagram are as follows.
(1) Center of gravity maintenance training The training method described in the previous section. Patient standing on Yuradoban (4), by swinging the Yuradoban (4), one which facilitates as to keep as much as possible the center of gravity position in the patient.
For this purpose, a concentric circle indicating the limit level of the swaying range is drawn on the screen, which is the patient's effort goal.
[0024]
(2) Center of gravity movement training A pattern diagram of center of gravity movement as an example is drawn in advance on the screen. Patients while maintaining the stepping position of the feet in surface plate which swings, as the locus of their center of gravity moves along the pattern view and a training method for changing actively posture. The patient must exercise the body (mainly the lower half of the body) while following the trajectory with his own eyes and following a model pattern. Thus, it is possible to obtain a greater recovery training effect than the center-of-gravity position maintenance training, such as the enhancement of the muscles of the sensory nerve, motor nerve and legs and hips.
A method of allowing the center of gravity to enter the area shown on the screen may be used.
As the exemplary pattern diagram, a simple geometric figure or a combination thereof, or a figure specially prepared by a specialized therapist is used.
[0025]
【Example】
Examples will be described with reference to the drawings.
FIG. 1 is an overall view showing an embodiment of the apparatus of the present invention, (A) is a side view, (B) is an upper plan view, and (C) is a front view in which a screen portion is omitted.
FIG. 2 is a detailed view showing the structure of the periodic precession oscillating motion mechanism of the present invention, (A) is a front view of the mechanism portion, (B) is a side view showing the tilt angle adjusting mechanism, and (C) is a side view. It is a top view.
[0026]
FIG. 3 is a detailed view of the load measuring unit, and FIG. 4 is an example of the locus of center of gravity fluctuation measured.
As shown in FIG. 2, the periodic precession oscillating motion mechanism has a center shaft (15) screwed to the center of a circular bottom plate (11), and a universal joint (6) above the center shaft. Further, the upper part of the universal joint is connected to the head part (34) of the tilting body by a shaft (35). Therefore, in this state, the head portion (34) of the tilting body can be bent in a 360 degree direction with the center of the universal joint (6) as a knuckle, but cannot turn.
[0027]
At the lower part of the center shaft (15), a pulley (13) is attached via a bearing (51), and the pulley can freely turn around the center fixed shaft (15).
On the pulley (13), the tilting base (2) is attached by a bolt, and the tilting body (3) is tiltably attached to the arm (22) of the tilting base by the tilting shaft (33).
[0028]
The tilting body (3) includes a tilting body main body (31) and a head portion (34), both of which are assembled by a bearing (52) so as to be rotatable. In this example, the turntable (14) and the tilt base (21) are common.
Here, it is made so that it may become a positional relationship so that the center of the previous universal joint (6) may coincide with the intersection of the tilting axis of the tilting body and the tilting axis.
[0029]
As shown in FIG. 2 , the tilt angle adjusting mechanism (7) is a mechanism combining the link (71), the link (72) and the screw (73), and changing the opening degree of the link by turning the screw (73). Can do.
One end of a link (71) is mounted to the tilt platform, one end of the link (72) is attached to the tilt member. The attachment position is the turning axis of the tilting body, the axis orthogonal to the tilting axis, and the intersection of the outer periphery of the tilting body.
Thereby, when the knob (75) is turned, the screw (73) is turned to change the opening degree of the links (71, 72), and the tilt angle of the tilting body (3) can be changed and set.
In this embodiment, the angle is adjusted manually, but the rotation of the screw may be automated using an electric motor or the like.
[0030]
When the pulley (13) rotating movements in this state, the tilting stand thereon (2) and the tilting body (31) is also a rotational motion. However, since the tilting body head part (34) is connected to the fixed bottom plate (11), it does not rotate, but performs a precession swinging motion with the tilting angle of the tilting body.
Although the pulley is shown as being driven by a V-belt, it may be driven by a gear or chain source procket.
A circular upper board (36) is screwed to the head part (34) of the tilting body, and load measuring parts (8) are attached to the positions of a, b, and c at three positions on the periphery thereof. The moving plate (4) is supported at three points on the loading point of the load measuring unit (8).
[0031]
The load measuring section uses the bending rigidity of the plate material, and its details are shown in FIG .
The load measuring member 81 was approximately rectangular, and a minimum cross-sectional portion was formed around both sides of the central portion, and a strain gauge (82) was attached to the front and back of the load measuring member 81.
The load was loaded on the load transmission shaft (85) and transmitted to the load measuring member (81) via the spherical bearing (83).
The load at the three points was continuously measured by an electric strain measuring device, and the data was sent to the computer calculation unit via the interface, and the position of the center of gravity was calculated by the above equations (1) and (2).
[0032]
Next, the training procedure will be explained.
In FIG. 1, G1 is a periodic precession swinging motion mechanism, G2 is a base, G3 is a handrail, G4 is a motor, G5 is a V-belt, and G6 is an operation panel having a screen G7 and operation buttons G8.
As a fixed position, the rocking plate (4) is stopped at a position facing the handrail opening side as shown in FIG. This is to make it easier for the patient to step in and out of their feet. When the patient to be trained gets on the rocking board (4) and then the start button on the operation panel is pressed, the rocking starts and the training is started.
[0033]
On the screen on the operation panel, the position of the center of gravity obtained from the three sets of load measurement values according to the equations (1) and (2) is displayed graphically every moment as shown in FIG. 4 on the screen G7 of the control panel G6. . The origin C0 in FIG. 4 is the position of the center of gravity when there is no load. Circles C1 and C2 are permissible ranges of the center of gravity fluctuation indicated as targets.
The training starts from the center of gravity C6, passes through C7, and reaches C8 now.
[0034]
By viewing this screen directly, the patient can confirm his condition and eagerly strive to enter the target range.
Figure 5 is an example of the model patterns to be used for the center of gravity movement training of the patient. Such a pattern is displayed on the screen, and the patient moves the body of his / her center of gravity positively and actively against the rocking of the rocking plate (4) , and displays the pattern on this pattern diagram. You will study as much as possible.
[0035]
【The invention's effect】
Depending on the degree of injury and illness of the patient, not only the swing period but also the inclination angle can be set to an optimum value, so that a prescription that matches the patient is possible.
Until now become a thing of simple and easy to boredom is senna rehabilitation training, by which the status of the body sway of the patient during the training was to be confirmed by the patient's own eyes, that work hard in training with the desire Therefore, the efficiency of training is increased, and the effect of accelerating recovery is obtained.
In addition, it became possible to quantitatively evaluate the outcome of the training, which not only improved the willingness to work on the patient's own training, but also provided important guidance for the training plan of the trainer.
[Brief description of the drawings]
FIG. 1 is an overall view of an apparatus, in which (A) is a side view of the entire apparatus, (B) is a top plan view thereof, and (C) is a front view of a state where a patient is placed (screen is omitted).
2A is a top view of the precession tilt motion mechanism, FIG. 2B is a detailed side view of the precession tilt motion mechanism, and FIG. 2C is a tilt of the precession tilt motion mechanism. It is a figure of a state.
FIG. 3 is a detailed view (side view) of a load measuring unit.
FIG. 4 is an example of a center of gravity movement locus record diagram.
FIG. 5 is an example of an exemplary pattern diagram for centroid movement training.
[Explanation of symbols]
G1 Precession tilting mechanism G2 Base G3 Handrail G4 Motor G5 Belt G6 Control panel G7 Display screen G8 Operation buttons a, b, c Load measurement part mounting position 1 Turntable 11 Bottom panel 12 Center fixed shaft 13 Pulley 14 Turntable 2 Tilt platform 21 tilt Taimoto Release 22 tilting arm 3 tilting member 31 the tilting body 32 bearing retainer 33 tilt shaft 34 head portion 35 shaft 36 upper plate 4 Yuradoban 5 bearing 51 bearing 52 bearing 6 universal joint 7 tilt angle adjusting mechanism 71 links 72 Link 73 Screw 75 Knob 8 Load measuring section 81 Load measuring member 82 Strain gauge 83 Spherical bearing 84 Bearing retainer 85 Load transmission axis C0 Origin C1 Target circle C2 Target circle C4 X axis C5 Y axis C6 Start point C7 Trajectory C8 End point

Claims (3)

Turntable (1), tilting table (2), tilting body (3), rocking plate (4), bearing (5) capable of supporting radial load, thrust load and moment load simultaneously, universal joint (6), tilting It consists of an angle adjustment mechanism (7),
The tilting table (2) is fixed on the rotating table (1),
The tilting body (3) is pivotally supported by the arm of the tilting base (2) so as to be tiltable.
The tilting body body and the tilting body head are pivotally coupled by a bearing (5) capable of supporting a radial load, a thrust load and a moment load at the same time,
The center axis of the turntable (1) and the center of the head of the tilting body are joined by a universal joint (6)
Align the center of the universal joint with the intersection of the pivot axis and tilt axis of the tilting body (3);
A link (71), a link (72) has a screw (73), fastened to the link (71) inclined Dodai (2), stopping the link (72) in the tilting body (3), screws (73 ) To adjust the tilt angle of the tilting body (3) . The balance function training apparatus with tilt angle adjusting function is provided . A load measuring part ( 8) is attached to three places between the rocking plate (4) and the head part (34) of the balance function training apparatus with a tilt angle adjusting function according to claim 1, and the load measuring part ( 8) 2. The balance function training apparatus according to claim 1, wherein the position of the center of gravity of the patient on the rocking board (4) is obtained from the signal and displayed on the display screen to evaluate the center of gravity fluctuation. The balance function training apparatus according to claim 2, wherein a pattern diagram as an example for instructing the center of gravity movement is drawn on the display screen according to claim 2 so that the center of gravity movement training can be performed.

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